Radio text plus over digital video broadcast-handheld

Abstract

Provided are apparatuses and methods for transmitting radiotext plus data (e.g., RT+ data) to a mobile terminal. In one example, radiotext plus data is received and transmitted to the mobile terminal in a Digital Video Broadcast—Handheld (DVB-H) data stream. Program or service data corresponding to a program may be endoded on IP and transmitted in audio/video data in a DVB-H data stream and RT+ data corresponding to the program may be transmitted on Internet Protocol (IP). For example, the RT+ data may be converted to Real-Time Transport Protocol (RTP) on a RTP timed text protocol. In another example, a content stream may be received and divided into a program data stream and a corresponding RT+ data stream. The RT+ data stream may be converted to RTP and synchronized with the program data on audio/video data in a DVB-H data stream. The RT+ data may be delivered to a mobile terminal.

1 . A method of transmitting radiotext plus data corresponding to a service to a terminal comprising:
 receiving radiotext plus data; and   transmitting the radiotext plus data to a user terminal,   wherein the radiotext plus data is transmitted to the user terminal in a Digital Video Broadcast—Handheld (DVB-H) stream.   
   
   
       2 . The method of  claim 1  wherein the transmitting comprises converting the radiotext plus data to Real-Time Transport Protocol (RTP). 
   
   
       3 . The method of  claim 2  wherein the converting comprises packing the radiotext plus data on an RTP timed text protocol. 
   
   
       4 . The method of  claim 1  further comprising synchronizing the radiotext plus data with the service data in the DVB-H stream. 
   
   
       5 . The method of  claim 4  further comprising inserting a first time stamp in the service data and inserting a second time stamp in the radiotext plus data. 
   
   
       6 . The method of  claim 1  wherein the receiving step comprises:
 receiving a data stream comprising program data and corresponding radiotext plus data; and   dividing the data stream into at least a first component and a second component.   
   
   
       7 . The method of  claim 6  wherein the first component comprises service data corresponding to the service and the second component comprises the radiotext plus data. 
   
   
       8 . The method of  claim 7  further comprising encoding the service data on the Internet Protocol (IP) and transmitting the program data on IP in the DVB-H stream to the mobile terminal. 
   
   
       9 . The method of  claim 8  further comprising converting the radiotext plus data to a Real-Time Protocol (RTP). 
   
   
       10 . The method of  claim 9  wherein the converting comprises packing the radiotext plus data on a Real-Time Protocol (RTP) timed text protocol. 
   
   
       11 . The method of  claim 9  further comprising synchronizing the radiotext plus data with the program data on IP in the DVB-H stream. 
   
   
       12 . The method of  claim 1  wherein the radiotext plus data comprises information selected from the group consisting of program, title, track artist, album, news, alerts, advertisements, and interactive elements. 
   
   
       13 . The method of  claim 1  wherein the radiotext plus data comprises information on interactive elements. 
   
   
       14 . An apparatus for transmitting radiotext plus data corresponding to a service comprising:
 an encoder for encoding the service data corresponding to the service in a DVB-H stream; and   a data converter for converting the radiotext plus data to RTP, the data converter further synchronizing the radiotext plus data with the service data in the DVB-H stream.   
   
   
       15 . The transmission system of  claim 14  further comprising a stream divider for receiving a data stream comprising the program data and the radiotext plus data and dividing the data stream into at least a first component and a second component. 
   
   
       16 . The transmission system of  claim 15  wherein the first component comprises the program data and the second component comprises the radiotext plus data. 
   
   
       17 . An apparatus for receiving radiotext data corresponding to a DVB-H stream comprising:
 a receiver for receiving the DVB-H stream comprising service data and corresponding radiotext plus data;   a processor for identifying data in the radiotext plus data;   a processor for synchronizing the service data and the corresponding radiotext plus data; and   a display for displaying content based on the radiotext plus data with the service data.   
   
   
       18 . The receiver of  claim 17  further comprising a storage for storing the radiotext plus data. 
   
   
       19 . The receiver of  claim 18  further comprising a module for processing the stored radiotext plus data. 
   
   
       20 . The receiver of  claim 19  wherein the module comprises a search module for retrieving data from the storage. 
   
   
       21 . The receiver of  claim 19  wherein the module comprises a filter module for retrieving data corresponding to a search parameter. 
   
   
       22 . The receiver of  claim 19  wherein the module comprises an indexing module for organizing data from the storage. 
   
   
       23 . The receiver of  claim 17  further comprising a control unit for creating a user interface. 
   
   
       24 . The receiver of  claim 23  wherein the processor identifies a parameter in the radiotext plus data and the control unit creates the user interface based on the parameter. 
   
   
       25 . A computer-readable medium comprising computer-readable instructions for performing the steps of:
 transmitting service data in a Digital Video Broadcast—Handheld (DVB-H) stream;   transmitting radiotext plus data on Internet Protocol (IP) in a radiotext plus data stream, the radiotext plus data corresponding to the service data;   synchronizing the radiotext plus data stream with the service data in the DVB-H stream; and   delivering the radiotext plus data to a mobile terminal.   
   
   
       26 . A method for transmitting radiotext plus data over Digital Video Broadcast—Handheld (DVB-H) stream, comprising:
 converting the radiotext plus data to a Real Time Protocol (RTP) data stream;   combining the RTP data stream with the radiotext plus data to a data stream of the DVB-H stream;   transmitting the DVB-H stream with the combined DVB-H data stream.   
   
   
       27 . A method for transmitting radiotext plus data over a DVB-H stream, comprising:
 converting the radiotext plus data to Real Time Control Protocol (RTCP) data stream;   combining the RTCP data stream with the radiotext plus data to an audio or visual stream of the DVB-H stream; and   transmitting the DVB-H stream with the combined DVB-H audio or visual stream.